Everything is resting on the Supreme Personality of Godhead; therefore He is the ultimate rest. Nidhanam means that everything, even the Brahman effulgence, rests on the Supreme Personality of Godhead Krsna. BG 1972 purports

Expressions researched:
"Everything is resting on the Supreme Personality of Godhead; therefore He is the ultimate rest" |"Nidhānam" |"means that everything, even the Brahman effulgence, rests on the Supreme Personality of Godhead Kṛṣṇa"

BG Chapters 7 - 12

Everything is resting on the Supreme Personality of Godhead; therefore He is the ultimate rest. Nidhānam means that everything, even the Brahman effulgence, rests on the Supreme Personality of Godhead Kṛṣṇa.

BG 11.38, Translation and Purport:

You are the original Personality, the Godhead. You are the only sanctuary of this manifested cosmic world. You know everything, and You are all that is knowable. You are above the material modes. O limitless form! This whole cosmic manifestation is pervaded by You!

Everything is resting on the Supreme Personality of Godhead; therefore He is the ultimate rest. Nidhānam means that everything, even the Brahman effulgence, rests on the Supreme Personality of Godhead Kṛṣṇa. He is the knower of everything that is happening in this world, and if knowledge has any end, He is the end of all knowledge; therefore He is the known and the knowable. He is the object of knowledge because He is all-pervading. Because He is the cause in the spiritual world, He is transcendental. He is also the chief personality in the transcendental world.